Liquid crystal on silicon display panel and electronic device using the same

Abstract

A liquid crystal on silicon (LCOS) display panel and an electronic device using the same are provided. The electronic device comprises the LCOS display panel and a circuit board. The LCOS display panel comprises a silicon substrate, a transparent substrate and a liquid crystal layer. The transparent substrate has a base plate and a mask layer. The circuit board is electrically connected to the display panel. The transparent substrate is disposed opposite to the silicon substrate, and the liquid crystal layer is positioned between the silicon substrate and the transparent substrate. The base plate has a first surface and a second surface opposite to the first surface that faces the silicon substrate. The mask layer is disposed on the second surface and has at least one opening to form at least one light-transmitting region and one light-blocking region, and the light-transmitting region is a displaying region of the transparent substrate.

1. A liquid crystal on silicon (LCOS) display panel, comprising:
 a silicon substrate; 
 a transparent substrate, disposed opposite the silicon substrate and having a base plate, a conductive layer, a first alignment figure and a mask layer, wherein the base plate has a first surface and a second surface opposite to the first surface, the first surface faces the silicon substrate, the conductive layer is disposed on the first surface, the first alignment figure is disposed on the second surface, the mask layer is disposed on the second surface and has at least one opening to form at least one light-blocking region and one light-transmitting region on the base plate, and the light-transmitting region is a displaying region of the transparent substrate; 
 an anti-reflection layer disposed on top or below a bottom surface of the mask layer and the displaying region is covered by the anti-reflection layer; and 
 a liquid crystal layer, positioned between the silicon substrate and the conductive layer of the transparent substrate. 
 
     
     
       2. The LCOS display panel according to  claim 1 , wherein the silicon substrate comprises a second alignment figure, which corresponds to the first alignment figure. 
     
     
       3. The LCOS display panel according to  claim 1 , wherein the first alignment figure is located in the light-blocking region. 
     
     
       4. The LCOS display panel according to  claim 3 , wherein the first alignment figure is formed by a through hole of the mask layer. 
     
     
       5. The LCOS display panel according to  claim 1 , wherein the first alignment figure is located in a non-displaying region of the transparent substrate. 
     
     
       6. The LCOS display panel according to  claim 5 , wherein a material for forming the first alignment figure is the same as that of the mask layer. 
     
     
       7. The LCOS display panel according to  claim 1 , wherein a boundary of the displaying region is defined by the light-blocking region. 
     
     
       8. The LCOS display panel according to  claim 1 , wherein the anti-reflection layer is disposed between the base plate and the mask layer. 
     
     
       9. The LCOS display panel according to  claim 1 , wherein the mask layer is disposed between the base plate and the anti-reflection layer. 
     
     
       10. The LCOS display panel according to  claim 1 , wherein the mask layer is made of chromium. 
     
     
       11. An electronic device, comprising:
 a circuit board; and 
 a LCOS display panel, electrically connected to the circuit board, having;
 a silicon substrate; 
 a transparent substrate, having a base plate, a conductive layer, a first alignment figure and a mask layer disposed on the base plate, wherein the base plate has a first surface and a second surface opposite to the first surface, the first surface faces the silicon substrate, the conductive layer is disposed on the first surface, the first alignment figure is disposed on the second surface, the mask layer is disposed on the second surface and has at least one opening to form at least one light-blocking region and one light-transmitting region on the base plate, and the light-transmitting region is a displaying region of the transparent substrate; 
 
 an anti-reflection layer disposed on top or below a bottom surface of the mask layer and the displaying region is covered by the anti-reflection layer; and 
 a liquid crystal layer, positioned between the silicon substrate and the conductive layer of the transparent substrate. 
 
     
     
       12. The electronic device according to  claim 11 , wherein the silicon substrate comprises a second alignment figure, which corresponds to the first alignment figure. 
     
     
       13. The electronic device according to  claim 11 , wherein the first alignment figure is located in the light-blocking region. 
     
     
       14. The electronic device according to  claim 13 , wherein the first alignment figure is formed by a through hole of the mask layer. 
     
     
       15. The electronic device according to  claim 11 , wherein the first alignment figure is located in a non-displaying region of the transparent substrate. 
     
     
       16. The electronic device according to  claim 15 , wherein a material for forming the first alignment figure is the same as that of the mask layer. 
     
     
       17. The electronic device according to  claim 11 , wherein the anti-reflection layer is disposed between the base plate and the mask layer. 
     
     
       18. The electronic device according to  claim 11 , wherein the mask layer is disposed between the base plate and the anti-reflection layer.